mikrotik nating

You are trying to have a local (192.168.1.x) IP address map to a public address?  I wouldn't expect that this router can do it.  NAT is used for the other direction: access to the router's public address goes to local private addresses.

Does the client access the IP by number or by name?  If by name then you have some ability to control that through DNS.

hello,
in short word i want to point mikrotik lan address to external web server on internet
for exmaple
when request 192.168.1.1 the client will open for example msn.com ip

any suggest ?

I'm not aware of how it would be possible in the router.  I see a serious problem with ANY internet access at that point.

For example, if a user wants to go to Google.com, the computer will send the packet to the router at 192.168.1.1, which would then pass it to the next hop.  If you have 192.168.1.1 redirected to msn.com's IP, it wouldn't get past there.

You could do some sorts of redirection with an internal web server that would get to the outside internet or you could possibly do some redirection with a different LAN address (such as 192.168.1.2 as a second address on the router).

o dont want to use it with web server regarding the browser cash problem....

i done it … by using dstnat and src nat .
thanks.